Drool rash turned yeast infection?

Me

Anyone have any experience with drool rashes? My sons got so bothersome for him last night he kept waking up and crying and scratching. I called our doctors office and the on call doctor called back and said I should try treating him for a yeast infection on his neck/ chest now because a lot of times when it stays for so long it will get a yeast infection. I just don’t want to put that harsh cream on him if I don’t truly have to but at the same time he’s so uncomfortable.

Any tips?